/*
 * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.activiti.validation.validator.impl;

import java.util.Collection;
import java.util.List;
import org.activiti.bpmn.model.BpmnModel;
import org.activiti.bpmn.model.Signal;
import org.activiti.validation.ValidationError;
import org.activiti.validation.validator.Problems;
import org.activiti.validation.validator.ValidatorImpl;
import org.apache.commons.lang3.StringUtils;

/**

 */
public class SignalValidator extends ValidatorImpl {

    @Override
    public void validate(BpmnModel bpmnModel, List<ValidationError> errors) {
        Collection<Signal> signals = bpmnModel.getSignals();
        if (signals != null && !signals.isEmpty()) {
            for (Signal signal : signals) {
                if (StringUtils.isEmpty(signal.getId())) {
                    addError(errors, Problems.SIGNAL_MISSING_ID, signal);
                }

                if (StringUtils.isEmpty(signal.getName())) {
                    addError(errors, Problems.SIGNAL_MISSING_NAME, signal);
                }

                if (
                    !StringUtils.isEmpty(signal.getName()) && duplicateName(signals, signal.getId(), signal.getName())
                ) {
                    addError(errors, Problems.SIGNAL_DUPLICATE_NAME, signal);
                }

                if (
                    signal.getScope() != null &&
                    !signal.getScope().equals(Signal.SCOPE_GLOBAL) &&
                    !signal.getScope().equals(Signal.SCOPE_PROCESS_INSTANCE)
                ) {
                    addError(errors, Problems.SIGNAL_INVALID_SCOPE, signal);
                }
            }
        }
    }

    protected boolean duplicateName(Collection<Signal> signals, String id, String name) {
        for (Signal signal : signals) {
            if (id != null && signal.getId() != null) {
                if (name.equals(signal.getName()) && !id.equals(signal.getId())) {
                    return true;
                }
            }
        }
        return false;
    }
}
